build: add regen preview local script

Author: jorgerangel-msft

.gitignore

@@ -217,6 +217,7 @@ packages/*/etc/
 # csharp emitter
 !packages/http-client-csharp/package-lock.json
 packages/http-client-csharp/generator/artifacts/
+packages/http-client-csharp/debug/
 packages/http-client-csharp/generated-defs/**/*.js
 packages/http-client-csharp/generated-defs/**/*.js.map
 packages/http-client-csharp/generated-defs/**/*.d.ts

cspell.yaml

@@ -154,11 +154,13 @@ words:
   - myname
   - mypy
   - nanos
+  - ncpu
   - nexted
   - nihao
   - nint
   - NODEFS
   - noformat
+  - nologo
   - noopener
   - noreferrer
   - nosec